### SB 3.11.19

> चत्वारि त्रीणि द्वे चैकं कृतादिषु यथाक्रमम् ।\
> सङ्ख्यातानि सहस्राणि द्विगुणानि शतानि च ॥१९॥

> catvāri trīṇi dve caikaṁ\
> kṛtādiṣu yathā-kramam\
> saṅkhyātāni sahasrāṇi\
> dvi-guṇāni śatāni ca

*catvāri*—four; *trīṇi*—three; *dve*—two; *ca*—also; *ekam*—one; *kṛta-ādiṣu*—in the Satya-yuga millennium; *yathā-kramam*—and subsequently others; *saṅkhyātāni*—numbering; *sahasrāṇi*—thousands; *dvi-guṇāni*—twice; *śatāni*—hundreds; *ca*—also.

**The duration of the Satya millennium equals 4,800 years of the demigods; the duration of the Treta millennium equals 3600 years of the demigods; the duration of the Dvāpara millennium equals 2,400 years; and that of the Kali millennium is 1,200 years of the demigods.**

As aforementioned, one year of the demigods is equal to 360 years of the human beings. The duration of the Satya-yuga is therefore 4,800 x 360, or 1,728,000 years. The duration of the Tretā-yuga is 3,600 x 360, or 1,296,000 years. The duration of the Dvāpara-yuga is 2,400 x 360, or 864,000 years. And the last, the Kali millennium, is 1,200 x 360, or 432,000 years.